Disorders of breast (N60-N65) ICD-10-CM
The N60–N65 section covers disorders of breast with 79 ICD-10-CM diagnosis codes, of which 60 are billable in fiscal year 2026. The section is organized into the 6 code ranges listed below.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Code Ranges in This Section 6 ranges · 79 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the N60–N65 Code Range
ICD-10 codes from N60 to N65 cover noncancerous disorders and structural changes affecting the breast, including cysts, mastopathy, inflammation, lumps, and issues after breast reconstruction. These codes help specify benign breast conditions by location and type for accurate diagnosis and treatment documentation.
This range includes codes like N60 for benign mammary dysplasia and various solitary cysts, such as N60.01 for cysts of the right breast. It also addresses fibrocystic changes known as diffuse cystic mastopathy (N60.11) and fibroadenosis (N60.21), helping coders identify fibrocystic disease or sclerosing adenosis. Inflammatory disorders like mastitis (N61.0) and breast abscesses (N61.1) are coded here, along with granulomatous mastitis (N61.21). N62 captures hypertrophy or enlargement such as gynecomastia. Unspecified lumps in specific breast areas use N63 codes, useful for documenting unclear breast masses. Other breast issues like nipple fissures (N64.0), fat necrosis (N64.1), galactorrhea (N64.3), and mastodynia or breast pain (N64.4) are also included. Finally, deformities or disproportion in reconstructed breasts are classified under N65.0 and N65.1. These codes are essential for distinguishing benign breast conditions, such as cysts, fibrocystic changes, inflammatory breast diseases, and post-surgical alterations, facilitating precise clinical and billing processes.
Questions About This Page
How many codes are in the N60-N65 range?
The N60-N65 range contains 79 ICD-10-CM diagnosis codes in FY 2026. 60 of them are billable, and the rest are category headers that organize the section.
What conditions does N60-N65 cover?
The range covers disorders of breast. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
